i started with a 12 x 36 lofted barn style building,went back in and added 13/16 treated plywood on floor,give the floor almost 1 1/2 inch thick,then went and reframed all the walls at 16in centers,cut a 4ft section out the side and then rebuilt that section to go back in wall but could be removed when i add the additon to the side,stuck a 10k btu ac in there with it,then i ran 2 sets of wires,main wiring for house and on each wall emergency recipticuls that run on the generator,wasnt any whole house setups back then hahahah wiring then insulation,r19 under the floor with chicken wire tacked all around the house and floor joist,r13 walls,covered the whole damn thing inside with OSB,when i do the addition i will sheet rock it all and be a place that all paid for and only monthly note electric and water,plan was to sit back at a river and fish to death,didnt work out that way hahaha